CN102496686A - Power supply for portable equipment as well as lithium ion battery of power supply and lithium ion battery package casing - Google Patents
Power supply for portable equipment as well as lithium ion battery of power supply and lithium ion battery package casing Download PDFInfo
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- CN102496686A CN102496686A CN2011104389636A CN201110438963A CN102496686A CN 102496686 A CN102496686 A CN 102496686A CN 2011104389636 A CN2011104389636 A CN 2011104389636A CN 201110438963 A CN201110438963 A CN 201110438963A CN 102496686 A CN102496686 A CN 102496686A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention belongs to the technical field of lithium ion batteries and particularly relates to a lithium ion battery package casing. The lithium ion battery package casing is of a two-layer structure, wherein an outer layer of the lithium ion battery package casing is a vacuum-deposited metal layer; and an inner layer of the lithium ion battery package casing is a plastic structure layer. Compared with the prior art, the lithium ion battery package casing disclosed by the invention has the characteristics of high strength, lightness, thinness and low possibility of leaking electrolyte, and can meet special requirements of various kinds of portable equipment for the shape of the battery. Meanwhile, the vacuum-deposited metal layer as the outer layer can also be directly used as a casing of the portable equipment without being additionally processed, so that the production cost is saved. In addition, the invention further discloses a lithium ion battery containing the package casing as well as a power supply adopting the lithium ion battery for the portable equipment.
Description
Technical field
The invention belongs to technical field of lithium ion, particularly a kind of lithium ion battery pack case and comprise the lithium ion battery of this pack case, and adopt the portable equipment of this lithium ion battery to use power supply.
Background technology
Lithium ion battery is widely used as the power supply of portable type electronic product at present, usually, can do thinlyyer in order to make equipment, and also in order to make equipment appearance more attractive in appearance, increasing portable equipment selects to adopt built-in lithium ion battery.
Existing built-in lithium ion battery generally adopts aluminium plastic membrane as outer packaging bag; Aluminium plastic membrane generally is three press molds layer by layer; Its structure is respectively polypropylene (PP) layer from inside to outside, as the aluminium lamination and the nylon layer of metal level, layer with layer between be connected through bonding agent.Because the hardness of aluminium plastic membrane itself is not enough; Therefore can outside packaged flexible packing lithium ion battery, wrap one deck pack case more usually protects; Adopt bonding agent that battery is bonded in the portable equipment power supply with in the dead slot then, the shortcoming of doing like this is that pack case has taken certain thickness and weight, develops to lighter and thinner direction for lithium ion battery and causes certain obstruction; Simultaneously during battery altering; Need wipe the bonding agent between battery and the dead slot off with instruments such as pocket knives, waste time and energy, very inconvenient.
In order to strengthen the hardness of outer packaging bag, people attempt adopting stainless steel to replace the aluminium lamination in the aluminium plastic membrane.But the outer packaging bag sealing property of this structure is also bad, and the seepage of electrolyte takes place between PP layer and stainless steel layer sometimes, thereby influences the battery outward appearance and recycle the life-span.
In view of this, but be necessary to provide a kind of lithium ion battery that has high strength, not only light but also thin and lithium ion battery pack case not easy-to-leak liquid and comprise this pack case, and the portable equipment that comprises this lithium ion battery is used power supply.
Summary of the invention
One of the object of the invention is: to the deficiency of prior art, and provide have high strength, light and the thin and lithium ion battery pack case of easy-to-leak liquid not.
To achieve these goals, the present invention adopts following technical scheme:
A kind of lithium ion battery pack case, said pack case are double-layer structure, and skin is the vacuum metallization layer, and internal layer is the plastic construction layer.The vacuum metallization layer plays waterproof effect, and the plastic construction layer has stronger hardness, plays the effect of support; The vacuum metallization layer is located on the plastic construction layer through the mode of vacuum evaporating; Rather than bond together through bonding agent, so sealing property is better, treatment process is simple simultaneously.And; Plastic construction layer and vacuum metallization layer lighter weight; Adopt injection molding method to regulate and control, therefore can reduce the weight and the thickness of battery to a certain extent, and can satisfy of the specific (special) requirements of various portable equipments cell shapes to its thickness and shape.Simultaneously, outer field vacuum metallization layer can also need not extra process directly as the shell of portable equipment, saves production cost.
As a kind of improvement of lithium ion battery pack case of the present invention, said vacuum metallization layer is vacuum aluminium coated layer or vacuum tin coating, and these two kinds of coats of metal can play good waterproof action.
As a kind of improvement of lithium ion battery pack case of the present invention, said plastic construction layer is PETG (PET) layer, PEN (PEN) layer or polyphenyl fat (PHB) layer.This different materials has that heat resistance is better, mechanical property good, hot strength is high, good processability, molding cycle is fast, water proofing property is good and air-tightness is good characteristics; Can play supporting role preferably; And can prevent the seepage of electrolyte, guarantee the outward appearance of battery.
As a kind of improvement of lithium ion battery pack case of the present invention, the thickness of said vacuum metallization layer is 5-20 μ m.The thickness of vacuum metallization layer is less than 1 μ m, and then waterproof action is not good, and the thickness of vacuum metallization layer then can influence the energy density of battery greater than 20 μ m.
As a kind of improvement of lithium ion battery pack case of the present invention, the thickness of said vacuum metallization layer is 7-12 μ m.
As a kind of improvement of lithium ion battery pack case of the present invention, the thickness of said plastic construction layer is 30-200 μ m.The thickness of plastic construction layer is less than 10 μ m, and then mechanical strength is not enough, and is impaired easily, and the thickness of plastic construction layer then can influence the energy density of battery greater than 200 μ m.
As a kind of improvement of lithium ion battery pack case of the present invention, the thickness of said plastic construction layer is 50-100 μ m.
Another object of the present invention is to provide a kind of lithium ion battery, comprises electric core and pack case, and said pack case is the described lithium ion battery pack case of above-mentioned paragraph.Adopt lithium ion battery pack case of the present invention, need not to wrap up in one deck external packing again and can have bigger hardness in the battery periphery, and light weight, thickness and controllable shapes can be saved the battery volume and weight, and satisfy the diversification requirement of portable equipment to battery.
A further object of the present invention is to provide a kind of portable equipment to use power supply; Comprise lithium ion battery; Circuit board and mechanical snap; Lithium ion battery and circuit board be through being welded to connect, mechanical snap be stuck in said lithium ion battery around, described lithium ion battery is the described lithium ion battery of above-mentioned paragraph.
With respect to prior art, lithium ion battery of the present invention uses high-intensity packaging material, thin thickness, and mechanical hardness is big, and heat resistance is better, and hot strength is high, good processability, water proofing property, air-tightness function admirable, and treatment process is simple, and cost reduces.And adopt injection molding method to regulate and control to its thickness and shape, to satisfy the diversification requirement of portable equipment to cell shapes.Around lithium ion battery, be aided with circuit board and mechanical snap, need not the bonding effect through bonding agent, the power supply that promptly can be used as portable type electronic product is installed in the battery case, also can be used as the mechanical packaging shell simultaneously.During replacing, only need take off buckle, can take out battery easily, it is more easy to change.
Description of drawings
Below in conjunction with accompanying drawing and embodiment, invention and useful technique effect thereof are further elaborated, wherein:
Fig. 1 is the profile of lithium ion battery pack case of the present invention;
Fig. 2 is the profile of lithium ion battery of the present invention;
Fig. 3 is the profile of portable equipment of the present invention with power supply.
Embodiment
Below in conjunction with embodiment and Figure of description, the present invention is described in further detail, but execution mode of the present invention is not limited thereto.
The structure of lithium ion battery pack case is shown in Fig. 1, and pack case is a double-layer structure, and skin is a vacuum metallization layer 11, and internal layer is a plastic construction layer 12.
The structure that comprises the lithium ion battery of this pack case is shown in Fig. 2, comprises electric core 2 and the pack case 1 that is used to encapsulate electric core, during practical operation; Earlier with the electric core 2 of plastic construction layer 12 parcel; After the sealing, carry out vacuum metallization on the surface of plastic construction layer 12 again, obtain vacuum metallization layer 11.
The portable equipment that comprises this lithium ion battery is shown in Fig. 3 with the structure of power supply, comprises lithium ion battery 01, circuit board 3 and mechanical snap 4, lithium ion battery 01 and circuit board 3 be through being welded to connect, mechanical snap 4 be stuck in said lithium ion battery 01 around.During practical operation, packaged surface is coated with the lug part and circuit board 3 welding of the lithium ion battery 01 of vacuum metallization layer 11, mechanical snap 4 gets final product on card around the lithium ion battery 01 then.
Plastic construction layer 12 adopts PETG (PET); Shape and size according to electric core 2; Adopt injection molding method that PETG is processed into the thick cavity of 30um that is, then lithium ion battery 01 is packed in this cavity into fluid injection in drying shed; Sealing, activation.Outer surface at cavity carries out vacuum aluminum-coated operation then, obtains vacuum metallization (aluminium) layer 11, and the thickness of aluminizing is 5um, obtains being encapsulated in the pack case 1 outside the lithium ion battery 01.
With the lug part and circuit board 3 welding of the lithium ion battery that obtains 01, mechanical snap 4 on card around the lithium ion battery 01 promptly obtains portable equipment and uses power supply then then.The pack case 1 of lithium ion battery 01 can directly be regarded the outer layer protection shell of portable equipment.
Different with embodiment 1 is: plastic construction layer 12 adopts PENs (PEN), and thickness is 50um, and the vacuum metallization layer is the vacuum tin coating, and thickness is 6um.
All the other repeat no more with embodiment 1 here.
Embodiment 3
Different with embodiment 1 is: plastic construction layer 12 adopts polyphenyl fat (PHB), and thickness is 90um, and the vacuum metallization layer is the vacuum tin coating, and thickness is 7um.
All the other repeat no more with embodiment 1 here.
Embodiment 4
Different with embodiment 1 is: the thickness of PETG (PET) is 100um, and the vacuum metallization layer is the vacuum tin coating, and thickness is 10um.
All the other repeat no more with embodiment 1 here.
Embodiment 5
Different with embodiment 1 is: the thickness of PETG (PET) is 150um, and the thickness of vacuum aluminium coated layer is 12um.
All the other repeat no more with embodiment 1 here.
Embodiment 6
Different with embodiment 1 is: plastic construction layer 12 adopts polyphenyl fat (PHB), and thickness is 200um, and the vacuum metallization layer is the vacuum tin coating, and thickness is 16um.
All the other repeat no more with embodiment 1 here.
Embodiment 7
Different with embodiment 1 is: plastic construction layer 12 adopts PENs (PEN), and thickness is 180um, and the thickness of vacuum aluminium coated layer is 20um.
All the other repeat no more with embodiment 1 here.
Embodiment 8
Different with embodiment 1 is: plastic construction layer 12 adopts polyphenyl fat (PHB), and thickness is 125um, and the thickness of vacuum aluminium coated layer is 8um.
All the other repeat no more with embodiment 1 here.
Embodiment 9
Different with embodiment 1 is: plastic construction layer 12 adopts PENs (PEN), and thickness is 75um, and the thickness of vacuum aluminium coated layer is 14um.
All the other repeat no more with embodiment 1 here.
Embodiment 10
Different with embodiment 1 is: the thickness of PETG (PET) is 110um, and the vacuum metallization layer is the vacuum tin coating, and thickness is 18um.
All the other repeat no more with embodiment 1 here.
Comparative Examples 1
Electric core is packed in the thick aluminium plastic membrane of 113um, fluid injection, sealing, activation obtains lithium ion battery.
Comparative Examples 2
Electric core is packed in the thick packaging bag of 113um, and the structure of packaging bag is respectively polypropylene (PP) layer from inside to outside, as the stainless steel layer and the nylon layer of metal level, layer with layer between be connected through bonding agent.Fluid injection, sealing, activation obtains lithium ion battery.
In order to assess the performance of lithium ion battery of the present invention and lithium ion battery of the prior art; The spy carries out drop test and circulation experiment to embodiment 1 to 10 with comparative example 1 and 2 gained lithium ion batteries, with the hardness of assessment lithium ion battery pack case of the present invention and the cycle performance of lithium ion battery.
Fall-down test:
Get the lithium ion battery of embodiment 1 to 10 and Comparative Examples 1 and 2 respectively, get 20 for every group, with the fall from high altitude ground of lithium ion battery from 3m, the lithium ion battery quantity of statistics and record distortion, the result is shown in table 1.
Loop test:
Get the lithium ion battery of embodiment 1 to 10 and Comparative Examples 1 and 2 respectively; Get 20 for every group; But lithium ion battery placed on the board loop test machine of Hangzhoupro do the circulation experiment under 25 ℃; Write down the capability retention of lithium ion battery after 400 circulations, and calculate the average size conservation rate of every group of 20 lithium ion batteries, the result is shown in table 1.
Table 1: embodiment 1 to 10 and the lithium ion battery fall-down test of Comparative Examples 1 and 2 and the result of cyclic test
| Group | The distortion number of batteries | Capability retention (%) |
| |
2 | 85 |
| |
1 | 84 |
| Embodiment 3 | 0 | 85 |
| Embodiment 4 | 0 | 86 |
| Embodiment 5 | 0 | 83 |
| Embodiment 6 | 0 | 84 |
| Embodiment 7 | 0 | 86 |
| Embodiment 8 | 0 | 85 |
| Embodiment 9 | 0 | 83 |
| Embodiment 10 | 0 | 84 |
| Comparative Examples 1 | 18 | 79 |
| Comparative Examples 2 | 2 | 80 |
Can know that by table 1 adopt number of batteries that the lithium ion battery of lithium ion battery pack case of the present invention deforms much smaller than the lithium ion battery of packing with aluminium plastic membrane, this is because lithium ion battery pack case of the present invention has stronger hardness in fall-down test; And the data of cyclic test show: lithium ion battery of the present invention has better cycle performance; This is not adopt bonding agent bonding because be not between the double-layer structure of lithium ion battery pack case of the present invention; And the method that makes direct employing vacuum-coating with 11 spraying plating of vacuum metallization layer on plastic construction layer 12, can prevent the seepage of electrolyte.
According to the announcement and the instruction of above-mentioned specification, those skilled in the art in the invention can also change and revise above-mentioned execution mode.Therefore, the embodiment that discloses and describe above the present invention is not limited to also should fall in the protection range of claim of the present invention modifications more of the present invention and change.In addition, although used some specific terms in this specification, these terms are explanation for ease just, the present invention is not constituted any restriction.
Claims (9)
1. lithium ion battery pack case, it is characterized in that: said pack case is a double-layer structure, and skin is the vacuum metallization layer, and internal layer is the plastic construction layer.
2. lithium ion battery pack case according to claim 1 is characterized in that: said vacuum metallization layer is vacuum aluminium coated layer or vacuum tin coating.
3. lithium ion battery pack case according to claim 1 is characterized in that: said plastic construction layer is PETG (PET) layer, PEN (PEN) layer or polyphenyl fat (PHB) layer.
4. lithium ion battery pack case according to claim 1 is characterized in that: the thickness of said vacuum metallization layer is 5-20 μ m.
5. lithium ion battery pack case according to claim 4 is characterized in that: the thickness of said vacuum metallization layer is 7-12 μ m.
6. lithium ion battery pack case according to claim 1 is characterized in that: the thickness of said plastic construction layer is 30-200 μ m.
7. lithium ion battery pack case according to claim 6 is characterized in that: the thickness of said plastic construction layer is 50-100 μ m.
8. a lithium ion battery comprises electric core and pack case, it is characterized in that: said pack case is each described lithium ion battery pack case of claim 1 to 7.
9. a portable equipment is used power supply; Comprise lithium ion battery, circuit board and mechanical snap, lithium ion battery and circuit board are through being welded to connect; Mechanical snap be stuck in said lithium ion battery around, it is characterized in that: described lithium ion battery is the described lithium ion battery of claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104389636A CN102496686A (en) | 2011-12-26 | 2011-12-26 | Power supply for portable equipment as well as lithium ion battery of power supply and lithium ion battery package casing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104389636A CN102496686A (en) | 2011-12-26 | 2011-12-26 | Power supply for portable equipment as well as lithium ion battery of power supply and lithium ion battery package casing |
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|---|---|
| CN102496686A true CN102496686A (en) | 2012-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011104389636A Pending CN102496686A (en) | 2011-12-26 | 2011-12-26 | Power supply for portable equipment as well as lithium ion battery of power supply and lithium ion battery package casing |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105514307A (en) * | 2016-01-22 | 2016-04-20 | 宁德新能源科技有限公司 | Lithium-ion battery packaging housing and lithium ion battery comprising same |
| CN105932179A (en) * | 2016-06-30 | 2016-09-07 | 谢振华 | Package housing of soft package battery and processing method thereof |
| CN108807732A (en) * | 2018-08-09 | 2018-11-13 | 临沂晶硕光电科技有限公司 | A kind of manufacturing method of lithium battery casing |
| CN109192888A (en) * | 2018-07-23 | 2019-01-11 | 浙江长宇新材料有限公司 | A kind of metal-coated membrane applied to lithium battery |
| CN111912571A (en) * | 2020-07-14 | 2020-11-10 | 广州小鹏汽车制造有限公司 | Battery box, method and device for detecting damage of battery box and vehicle |
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| CN2896543Y (en) * | 2005-11-22 | 2007-05-02 | 杭州绿岛新能源开发有限公司 | Lithium-ion cell for mine lamp |
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| CN201717330U (en) * | 2010-06-04 | 2011-01-19 | 佛山市顺德区精进能源有限公司 | Polymer lithium ion electric vehicle battery |
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Patent Citations (6)
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| EP0795968A2 (en) * | 1996-03-13 | 1997-09-17 | AEG MOBILE COMMUNICATION GmbH | Battery pack for electronic device |
| CN2896543Y (en) * | 2005-11-22 | 2007-05-02 | 杭州绿岛新能源开发有限公司 | Lithium-ion cell for mine lamp |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105514307A (en) * | 2016-01-22 | 2016-04-20 | 宁德新能源科技有限公司 | Lithium-ion battery packaging housing and lithium ion battery comprising same |
| CN105932179A (en) * | 2016-06-30 | 2016-09-07 | 谢振华 | Package housing of soft package battery and processing method thereof |
| CN109192888A (en) * | 2018-07-23 | 2019-01-11 | 浙江长宇新材料有限公司 | A kind of metal-coated membrane applied to lithium battery |
| CN108807732A (en) * | 2018-08-09 | 2018-11-13 | 临沂晶硕光电科技有限公司 | A kind of manufacturing method of lithium battery casing |
| CN111912571A (en) * | 2020-07-14 | 2020-11-10 | 广州小鹏汽车制造有限公司 | Battery box, method and device for detecting damage of battery box and vehicle |
| CN111912571B (en) * | 2020-07-14 | 2022-08-16 | 广州小鹏汽车制造有限公司 | Battery box, method and device for detecting damage of battery box and vehicle |
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Application publication date: 20120613 |